upgrade epel-release to latest-7 in Centos7 Dockerfile

Version 7.12 is no longer available.

Fixes this error when building the Docker image:

Cannot open: https://download-ib01.fedoraproject.org/pub/epel/7/x86_64/Packages/e/epel-release-7-12.noarch.rpm. Skipping.

diff --git a/ci/centos7/Dockerfile b/ci/centos7/Dockerfile
index 9b9273d7ceec2adf4e28f23f5a7ac2235b0b5e23..2f715a19e4eabb83775764e929aba7a2fea9ea5f 100644 (file)
--- a/ci/centos7/Dockerfile
+++ b/ci/centos7/Dockerfile
@@ -6,7 +6,7 @@ COPY requirements.txt ./requirements.txt
 RUN yum -y groupinstall 'Development Tools' \
 && yum install -y \
 # Install epel-release rpm (Needed for cmake3. Must be a separate step)
-https://download-ib01.fedoraproject.org/pub/epel/7/x86_64/Packages/e/epel-release-7-12.noarch.rpm \
+https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm \
 # Install ius-release rpm (Needed for git version 2. Must be a separate step)
 https://repo.ius.io/ius-release-el7.rpm \
 && yum clean all && rm -rf /var/cache/yum \